package Main;


import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        
    Scanner in =new Scanner(System.in);
    while(in.hasNextInt())
    {
        int a=in.nextInt();
        int b=in.nextInt();
        if(a>1000)
            System.out.println("a<=1000");
        else
            System.out.println(a+b);    
    }
    in.close();

}
}